The car’s greenhouse is the part of the car delimited by windscreen, rear, side windows and roof.
The green house is basically is the habitable part of the car.
Greenhouse’s shape and position is the most important factor to determinate the body style of the car. For example the number and the size of the side glasses will define if it is a sedan, coupé, fastback, hatchback, wagon…
More information regarding body configuration in the following post, https://www.autoexpertus.com/automobile-body-configuration
Side glass surface or glass barrel, has influence on the headroom space. This means that a curved glass surface will imprint more sporty style to the car but with poor head comfort. In the other hand, the flatter the glass surface is the better for the interior space. But we will go through this ergonomy topic in future posts…